1
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Huang Z, Wang C, Chen X, Ding S, Xiang Q, Xie M, Huang Y, Li H. Regulation of recombinant humanized collagen on HAP growth and its molecule simulation. RSC Adv 2023; 13:26031-26040. [PMID: 37664193 PMCID: PMC10472339 DOI: 10.1039/d3ra03810f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/13/2023] [Indexed: 09/05/2023] Open
Abstract
Hydroxyapatite (HAP) in natural bone is formed under the regulation of natural collagen I. Here, we report how recombinant humanized collagen I (rhCol I) regulates the growth of HAP nanocrystals in a long belt shape 100-150 nm in width and 200-300 nm in length. MD simulation results showed that the interactions between rhCol I and the (001), (100), and (211) planes of HAP mainly contributed to the electrostatic force and van der Waals forces via COO⋯Ca, -NH⋯Ca, CH⋯OPO3, and NH⋯OPO3 bonds, respectively. On the (001) plane, the interaction between -COO- and Ca was stronger than on the (100) and (211) planes, resulting in a large electrostatic force, which inhibited the growth of the (001) plane. The lowest energy of adsorption to the (211) plane resulted in the preferential growth of the (211) plane due to the weakest interaction with rhCol I. The detailed correlation between HAP and rhCol I could explain HAP growth under regulation by rhCol I. This study provides a reference for the bio-application of recombinant collagen.
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Affiliation(s)
- Zhilin Huang
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education Guangzhou 510632 China
| | - Chucheng Wang
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education Guangzhou 510632 China
| | - Xiaohui Chen
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education Guangzhou 510632 China
| | - Shan Ding
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education Guangzhou 510632 China
| | - Qi Xiang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University Guangzhou 510632 China
| | - Mo Xie
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications Guangzhou 510632 China
| | - Yadong Huang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University Guangzhou 510632 China
| | - Hong Li
- College of Chemistry and Materials Science, Jinan University Guangzhou 510632 China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education Guangzhou 510632 China
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2
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Zhang Q, Xue Z, Wang X, Xu D. Molecular Dynamics Simulation of Biomimetic Biphasic Calcium Phosphate Nanoparticles. J Phys Chem B 2022; 126:9726-9736. [PMID: 36378585 DOI: 10.1021/acs.jpcb.2c06098] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biphasic calcium phosphate (BCP) is used as a bone substitute and bone tissue repair material due to its better control over bioactivity and biodegradability. It is crucial to stabilize the implanted biomaterial while promoting bone ingrowth. However, a lack of standard experimental and theoretical protocols to characterize the physicochemical properties of BCP limits the optimization of its composition and properties. Computational simulations can help us better to learn BCP at a nanoscale level. Here, the Voronoi tessellation method was combined with simulated annealing molecular dynamics to construct BCP nanoparticle models of different sizes, which were used to understand the physicochemical properties of BCP (e.g., melting point, infrared spectrum, and mechanical properties). We observed a ∼20 to 30 Å layer of calcium-deficient hydroxyapatite at the HAP/β-TCP interface due to particle migration, which may contribute to BCP stability. The BCP model may stimulate further research into BCP ceramics and multiphasic ceramics. Moreover, our study may facilitate the optimization of compositions of BCP-based biomaterials.
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Affiliation(s)
- Qiao Zhang
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, PR China
| | - Zhiyu Xue
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, PR China
| | - Xin Wang
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, PR China
| | - Dingguo Xu
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, PR China
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3
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Huang B, Li M, Mo H, Chen C, Chen K. Effects of Substitution Ratios of Zinc-Substituted Hydroxyapatite on Adsorption and Desorption Behaviors of Bone Morphogenetic Protein-2. Int J Mol Sci 2022; 23:ijms231710144. [PMID: 36077541 PMCID: PMC9456158 DOI: 10.3390/ijms231710144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/31/2022] [Accepted: 08/31/2022] [Indexed: 12/15/2022] Open
Abstract
Understanding interactions between bone morphogenetic proteins (BMPs) and biomaterials is of great significance in preserving the structure and bioactivity of BMPs when utilized in clinical applications. Currently, bone morphogenetic protein-2 (BMP-2) is one of the most important growth factors in bone tissue engineering; however, atomistic interactions between BMP-2 and zinc-substituted hydroxyapatite (Zn-HAP, commonly used in artificial bone implants) have not been well clarified until now. Thus, in this work, the interaction energies, binding/debinding states, and molecular structures of BMP-2 upon a series of Zn-HAP surfaces (Zn-HAPs, 1 at%, 2.5 at%, 5 at%, and 10 at% substitution) were investigated by hybrid molecular dynamics (MD) and steered molecular dynamics (SMD) simulations. Meanwhile, cellular studies including alkaline phosphatase (ALP) activity and reverse transcription-polymerase chain reaction (RT-PCR) assay were performed to verify the theoretical modeling findings. It was found that, compared to pure HAP, Zn-HAPs exhibited a higher binding affinity of BMP-2 at the adsorption process; meanwhile, the detachment of BMP-2 upon Zn-HAPs was more difficult at the desorption process. In addition, molecular structures of BMP-2 could be well stabilized upon Zn-HAPs, especially for Zn10-HAP (with a 10 at% substitution), which showed both the higher stability of cystine-knots and less change in the secondary structures of BMP-2 than those upon HAP. Cellular studies confirmed that higher ALP activity and osteogenic marker gene expression were achieved upon BMP-2/Zn-HAPs than those upon BMP-2/HAP. These findings verified that Zn-HAPs favor the adsorption of BMP-2 and leverage the bioactivity of BMP-2. Together, this work clarified the interaction mechanisms between BMP-2 and Zn-HAPs at the atom level, which could provide new molecular-level insights into the design of BMP-2-loaded biomaterials for bone tissue engineering.
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4
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An Atomistic Investigation of Adsorption of Bone Morphogenetic Protein-2 on Gold with Nanoscale Topographies. SURFACES 2022. [DOI: 10.3390/surfaces5010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Nanoscale surface topographies mediated with biochemical cues influence the differentiation of stem cells into different lineages. This research focuses on the adsorption behavior of bone morphogenetic protein (BMP-2) on nanopatterned gold substrates, which can aid in the differentiation of bone and cartilage tissue constructs. The gold substrates were patterned as flat, pillar, linear grating, and linear-grating deep based, and the BMP-2 conformation in end-on configuration was studied over 20 ns. The linear grating deep substrate pattern had the highest adsorption energy of around 125 kJ/mol and maintained its radius of gyration of 18.5 Å, indicating a stable adsorption behavior. Secondary structures including α-helix and β-sheet displayed no denaturation, and thus, the bioavailability of the BMP-2, for the deep linear-grating pattern. Ramachandran plots for the wrist and knuckle epitopes indicated no steric hindrances and provided binding sites to type I and type II receptors. The deep linear-grating substrate had the highest number of contacts (88 atoms) within 5 Å of the gold substrate, indicating its preferred nanoscale pattern choice among the substrates considered. This research provides new insights into the atomistic adsorption of BMP-2 on nanoscale topographies of a gold substrate, with applications in biomedical implants and regenerative medicine.
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5
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Vaissier Welborn V. Environment-controlled water adsorption at hydroxyapatite/collagen interfaces. Phys Chem Chem Phys 2021; 23:13789-13796. [PMID: 33942041 DOI: 10.1039/d1cp01028j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Water contributes to the structure of bone by coupling hydroxyapatite to collagen over the hierarchical levels of tissue organization. Bone water exists in two states, bound or mobile, each accomplishing different roles. Although many experimental studies show that the amount of bound water correlates with bone strength, a molecular understanding of the interactions between hydroxyapatite, collagen and water is missing. In this work, we unveil the water adsorption properties of bone tissues at the nanoscale using advanced density functional theory methods. We demonstrate that environmental factors such as collagen conformation or degree of confinement, rather than the surface itself, dictate the adsorption mode, strength and density of water on hydroxyapatite. While the results derived in this paper come from a simplified model of bone tissues, they are consistent with experimental observations and constitute a reasonable starting point for more realistic models of bone tissues. For example, we show that environmental changes expected in aging bone lead to reduced water adsorption capabilities, which is consistent with weaker bones at the macroscale. Our findings provide a new interpretation of molecular interactions in bone tissues with the potential to impact bone repair strategies.
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6
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Klauda JB. Virtual Issue on Docking. J Phys Chem B 2021; 125:5455-5457. [PMID: 34078077 DOI: 10.1021/acs.jpcb.1c03303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jeffery B Klauda
- Department of Chemical and Biomolecular Engineering, University of Maryland
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7
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Zhu C, Zhou X, Liu Z, Chen H, Wu H, Yang X, Zhu X, Ma J, Dong H. The Morphology of Hydroxyapatite Nanoparticles Regulates Cargo Recognition in Clathrin-Mediated Endocytosis. Front Mol Biosci 2021; 8:627015. [PMID: 33748189 PMCID: PMC7969717 DOI: 10.3389/fmolb.2021.627015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 01/15/2021] [Indexed: 01/06/2023] Open
Abstract
The clathrin-associated protein adaptin-2 (AP2) is a distinctive member of the hetero-tetrameric clathrin adaptor complex family. It plays a crucial role in many intracellular vesicle transport pathways. The hydroxyapatite (HAp) nanoparticles can enter cells through clathrin-dependent endocytosis, induce apoptosis, and ultimately inhibit tumor metastasis. Exploring the micro process of the binding of AP2 and HAp is of great significance for understanding the molecular mechanism of HAp's anti-cancer ability. In this work, we used molecular modeling to study the binding of spherical, rod-shaped, and needle-shaped HAps toward AP2 protein at the atomic level and found that different nanoparticles' morphology can determine their binding specificity through electrostatic interactions. Our results show that globular HAp significantly changes AP2 protein conformation, while needle-shaped HAP has more substantial binding energy with AP2. Therefore, this work offers a microscopic picture for cargo recognition in clathrin-mediated endocytosis, clarifies the design principles and possible mechanisms of high-efficiency nano-biomaterials, and provides a basis for their potential anti-tumor therapeutic effects.
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Affiliation(s)
- Cheng Zhu
- Kuang Yaming Honors School, Nanjing University, Nanjing, China
- Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, School of Life Sciences, Tianjin University, Tianjin, China
| | - Xuejie Zhou
- Kuang Yaming Honors School, Nanjing University, Nanjing, China
| | - Ziteng Liu
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Hongwei Chen
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Hongfeng Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Xiao Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Xiangdong Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Jing Ma
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
- Nanxin Pharm. Co., Ltd., Nanjing, China
| | - Hao Dong
- Kuang Yaming Honors School, Nanjing University, Nanjing, China
- Nanxin Pharm. Co., Ltd., Nanjing, China
- Institute for Brain Sciences, Nanjing University, Nanjing, China
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8
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Basu S, Gorai B, Basu B, Maiti PK. Electric Field-Mediated Fibronectin-Hydroxyapatite Interaction: A Molecular Insight. J Phys Chem B 2021; 125:3-16. [PMID: 33395296 DOI: 10.1021/acs.jpcb.0c08255] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In experimental research-driven biomaterials science, the influence of different material properties (elastic stiffness, surface energy, etc.) and, to a relatively lesser extent, biophysical stimulation (electric/magnetic) on cell-material interactions has been extensively investigated. Despite the central importance of protein adsorption on cell-material interactions, the quantitative analysis to probe into the role of physicochemical factors in protein adsorption remains largely unexplored in biomaterials science. In recent studies, the critical role of electric field stimulation toward the modulation of cell functionality in implantable biomaterials has been experimentally demonstrated. Given this background, we investigated the influence of external electric field stimulation (upto 1.00 V/nm) on fibronectin (FN) adsorption on a hydroxyapatite (HA) (001) surface at 300 K using the all-atom molecular dynamics (MD) simulation method. FN adsorption was found to be governed by attractive electrostatic interactions, which changed with the electric field strength. Nonmonotonous changes in the structural integrity of FN were recorded with the change in the field strength and direction. This can be attributed to the spatial rearrangement of the positions of local charges and the global structural changes of proteins. The dipole moment vectors of FN, water, and HA quantitatively exhibited a similar pattern of orienting themselves parallel to the field direction, with field strength-dependent increase in their magnitudes. No significant change has been recorded for the radial distribution function of water surrounding FN. Field-dependent variation in the salt bridge nets and the number of hydrogen bonds between FN and HA were also examined. One of the important results in the context of cell-material interaction is that the RGD (Arg-Gly-Asp) sequence of FN was exposed to the solvent side when the field was applied along an outward direction perpendicular to the HA (001) surface. In summary, the present study provides molecular insights into the influence of electric field stimulation on phenomenological interactions involved in FN adsorption on the HA surface.
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Affiliation(s)
- Subhadip Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Biswajit Gorai
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Bikramjit Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India.,Center for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Prabal K Maiti
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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9
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Awasthi S, Pandey SK, Arunan E, Srivastava C. A review on hydroxyapatite coatings for the biomedical applications: experimental and theoretical perspectives. J Mater Chem B 2021; 9:228-249. [DOI: 10.1039/d0tb02407d] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The production of hydroxyapatite (HAP) composite coatings has continuously been investigated for bone tissue applications during the last few decades due to their significant bioactivity and osteoconductivity.
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Affiliation(s)
- Shikha Awasthi
- Department of Materials Engineering
- Indian Institute of Science Bangalore
- Bangalore 560012
- India
| | - Sarvesh Kumar Pandey
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science Bangalore
- Bangalore 560012
- India
| | - E. Arunan
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science Bangalore
- Bangalore 560012
- India
| | - Chandan Srivastava
- Department of Materials Engineering
- Indian Institute of Science Bangalore
- Bangalore 560012
- India
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10
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Zhao X, Xue Z, Wang K, Wang X, Xu D. Molecular docking and molecular dynamics simulation studies on the adsorption/desorption behavior of bone morphogenetic protein-7 on the β-tricalcium phosphate surface. Phys Chem Chem Phys 2020; 22:16747-16759. [PMID: 32662481 DOI: 10.1039/d0cp01950j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The adsorption/desorption behavior, and conformational and orientational changes of proteins on the surface of biomaterials are significant parameters for understanding how biomaterials perform their biological functions. In this study, for the first time, the interactions between BMP-7 and β-TCP (001) surface models with different ion-rich terminations (Ca-rich and P-rich) were investigated by molecular dynamics simulation (MD) and steered molecular dynamics simulation (SMD). The results indicated that BMP-7 preferentially interacts with both Ca-rich and P-rich β-TCP (001) surfaces at its wrist epitope residues with certain conformational changes, which led to more exposure of BMP-7 knuckle epitope residues to the environment and facilitation for binding to the type II receptor. Compared to the P-rich surface, it is speculated that the Ca-rich surface was more conducive to BMP-7 signal transduction since the upright orientation of the protein adsorption would lead to smaller hindrance for receptor binding. This study provided more atomistic and molecular information for better understanding the process of Ca-P surfaces affecting BMP-7 biological properties and further interpreted the osteoinductive mechanism from the perspective of growth factor adsorption. Moreover, the docking screening method adopted in this study is of guiding significance to the design and development of bioactive materials.
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Affiliation(s)
- Xiaoyu Zhao
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China.
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11
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Konar M, Sahoo H. Tyrosine mediated conformational change in bone morphogenetic protein – 2: Biophysical implications of protein – phytoestrogen interaction. Int J Biol Macromol 2020; 150:727-736. [DOI: 10.1016/j.ijbiomac.2020.02.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 01/18/2023]
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12
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Lowe B, Hardy JG, Walsh LJ. Optimizing Nanohydroxyapatite Nanocomposites for Bone Tissue Engineering. ACS OMEGA 2020; 5:1-9. [PMID: 31956745 PMCID: PMC6963893 DOI: 10.1021/acsomega.9b02917] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 12/04/2019] [Indexed: 05/29/2023]
Abstract
Bone tissue engineering involves the combined use of materials with functional properties to regenerate bone. Nanohydroxyapatite (nHA) can influence the behavior of cells. The functional and structural properties of nHA can be controlled during nanoparticle synthesis. This review defines the relationship between the attributes of nHA nanoparticles and their biological effects, focusing on biocompatibility, surface-area-to-volume ratio, bonding chemistry, and substrate functionality. The paper explores how these aspects have been applied in the development of scaffolds for the repair of damaged bone or regeneration of missing bone.
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Affiliation(s)
- Baboucarr Lowe
- School
of Dentistry, The University of Queensland, Brisbane QLD 4006, Australia
| | - John G. Hardy
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.
- Materials
Science Institute, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Laurence J. Walsh
- School
of Dentistry, The University of Queensland, Brisbane QLD 4006, Australia
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13
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Basu S, Basu B. Unravelling Doped Biphasic Calcium Phosphate: Synthesis to Application. ACS APPLIED BIO MATERIALS 2019; 2:5263-5297. [DOI: 10.1021/acsabm.9b00488] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Subhadip Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Bikramjit Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
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